Elevator driving mechanism.



B. F. MECHLING, JR. ELEVATOR DRIVING MECHANISM.

APPLICATION FILED MAYI2.1914.

7 1,149,206. Patented Aug. 10, 1915.

3 SHEETS-SHEET I.

- q 1 VENTOR WITNESSES n g i A'ITORNEY COLUMBIA PLANOGRAFH CO.,WASHINGTDN. D. C.

B. F. MECHLING, JR.

ELEVATOR DRIVING MECHANISM,

APPLICATION HLED MAY 12, 19 14.

Patented Aug 10, 1915.

3 SHEETS-SHEET 2- Fla 7;

WITNESSES J ZZW INVENTOR A'I' I'ORNEY COLUMBIA PLANOHRAPH C0,, WASHINGTON, D. r.

B. F. MECHLING, Jn.

ELEVATOR DRIVING MECHANISM.-

APPLICATION FILED MAY 12, 1914.

1,149,206. Patented Aug. 10, 1915.

a SHEETS-SHEET a. Q

14 Q7 6 ,1 I l INVENTOR ATTORNEY COLUMBIA PLANOURAPH C0., WASHINGTON, D. c.

BENJAMIN F. MEG LING, JR, or PHILADELPHIA,

PENNSYLVANIA, ASSIGNOR T0 THE PGRATION or PENNSYLVANIA.

ELEVATOR DRI JING MECHANISM.

Specification of Letters Patent.

Patented Aug. 10, 1915.

. Application enem 12,1914. Serial No. 837,984.

To all whom it mag/concern: A y

Be it known that'I, BENJA IN F. Muen- LING, J12, a citizen ofthe United States, residing in the city of Philadelphia, State of Pennsylvania, have invented a new and useful Elevator Driving Mechanism, of which the following is a specification.

My inventionrelates to elevatormachines such as employed for raising and lowering cars or platforms, generally in vertical shafts, for the transportation of freight or passengers.

My invention resides in elevator apparatus of this character in which great economy in space and cost of manufacture and standardization is procured whereby a single design of the machine will usefully serve for various conditions of elevator service.

My invention resides particularly in a machine of this character for use in a trac tion system as distinguished from a drum system; and it is part of my invention to provide a traction sheave machine which shall have the advantagesabove enumerated as to economy in space, manufacture, etc.

By my invention the traction sheave is provided with an integral driving gear driven by pinion which is in turn driven by a worm wheel, the latter driven by a worm coupled to the driving motor. And the arrangement of these driving elements, their bearings, housings, and the main base is such that the economy above referred to is accomplished.

My invention resides in apparatus of the character hereinafter described and claimed.

For an illustration of one of the forms my invention may take reference is to be had to the accompanying drawings, in which:

Figure 1 is a side elevational view of the complete machine. Fig. 2 is an end elevational view of the same, with the motor removed. Fig. 3 is a cross-sectional view taken 'on the line XX of Fig. '1. Fig. 4c is a longitudinal sectional view through the brake wheel and coupling. Flg. 5 is a diagrammatic view illustrating a system of housing and control cables and associated parts. Fig. 6 is a view of the apparatus shown in Fig. 5 taken at right angles to Fig. 5. Fig. 7 is a diagrammatic view of the supply conductors, control switch motor 1 and solenoid.

Referring to the drawings, 1 is a cast metal b ed upon which is secured by bolts 2 the electric driving motor M the controlling and reversing switch S for which, having stationary contacts 3 and rotary contacts 1', is housed within the base or bed 1 and accessible through the aperture 5 normally closed by plate 6. The movable contacts tare carriedby the shaft 7 which extends to the exterior of the bed or base 1 and has secured thereon the control wheel or sheave 8 to which is attached at 9 one end of the control cable 10.

The rotor 01' armature shaft 11 of the motor M extends into the split coupling comprising the half 12 cast integral with the brake wheel 13, the other half 14 of the coupling being secured by bolts 15 to the part 12, thus coupling the motor shaft 11 tothe worm shaft 16 which extends into the bore of the brake Wheel 13 and is secured to the latter by key 7c.

Pivo-ted to the ear or lug 17 on the bed 1 at 18 is the solenoid 19, having the magnetic jacket or housing 20 and the movable core 21, the latter pivoted at 2.2 to the lever 23 pivoted at 2% to the yoke or arm 25 on cap 38. At its opposite end the beam or lever 23 carries the adj ustable weight 26. Pivoted to A the lug or car 27, on the bed plate 1, at 28 and 29 are theends of brake straps 30 and 31 engaging the brake surface 32 of the brake wheel 13 and terminating at the pivots 33 and 34: on the brake beam or lever 23. lVeight 26 tends continually to rotate the beam 23 in a clockwise direction about its pivot 24, as viewed in Fig. 2, thus putting a tension upon the straps 30 and 31 and causing friction at the surface 32 to retard or stop rotation of the shafts 11 and 16 and all parts coupled to or driven by them. And when the solenoid 19 is energized it attracts its core 21 downwardly, thus opposing the weight 26 in its action upon straps 30 and 31, and in effect lifting the brake.

Secured upon the worm shaft 16 is the worm 35, ball thrust bearings 36 being provided for the same within the housing 37 cast integral with the bed plate 1 and having the removable cap 38 bolted to the hous rings 42 loosely embracing the shaft 16 and rotated thereby to lift oil continuously into neath the worm and drives the pinion which meshes with the lower part of the internal the hearings. on the right hand end of cap .38,'as viewed in Fig. 1, is supported the arm 25 above referred to. Meshing with the worm 35 is the worm Wheel 43 secured upon shaft .44 extending through the bearings 45.

cast integral with the bed 1 and the housing 37. In the worm gear housing 37 is maintained a supply of lubricant, such as castor oil, in which the worm wheel 43 is continuously immersed to a suitable depth whereby the worm wheel 43 and worm 35 are constantly lubricated. 7

At the right end of shaft 44, as viewed in Fig. 3, is a pinion 46 which-meshes with substantially the lowest part of the internal gear 47 integral with the traction sheave 48 having on its periphery the grooves 49 to receive the traction cable 50, Figs. 5 and 6. The sheave 48 has the hub 51 secured by key 70 to the shaft 52 which has an outboard bearing 53 carried by the pillar or standard 54 held by bolts 55 to the member 56 of the bed plate 1. The shaft 52 has also an inboard'bearing whose lower half 57 is integral with the housing 37 and whose upper half 58 is integral with the cap or cover 38. It will be seen therefore that the housing 37 with its cap orcover 38 provides two bearings for the worm shaft 16, thrust bearings for this worm, anda bearing for the traction sheave. And it will be further noted that the worm gear is disposed begear integral with the traction sheave,these features lending themselves to great economy of'space, and particularly to the reduction in size of traction sheave machines.

In Figs. 5 and 6 is shown diagrammati cally a traction system for elevator car operation. The elevator car 59 has secured thereto one end of the cable 50 which passes over the traction sheave 48 thence over the idler wheel 60, thence again over the sheave 48, and the other end of the cable has secured thereto the counterweighttl. The control cable 10 for the motor control switch S passes through the car 59 and when grasped Or held by a person or means on the 1 car 59 can be moved in such direction as to the same to the motor M and solenoid 19.

It will be understood that when the motor M is energized, by shifting the switch S by control cable 10, the rotor or armature of the motor will rotate shaft '11 and through motor circuit is broken the solenoid will be deenergized and the-weight 26 will apply the brake to hold the car in any predetermined or desired position. 7

F rom' the foregoing description it is apparent that I have provided a machine, particularly adaptable to the traction system, whereby a machine of unusually small dimensions may be provided in virtue of the arrangement of the elements of the driving or traction mechanism and their bearings.

\Vhat I claim is: I

.1. Elevator driving mechanism comprising a traction'sheave, a bed, an outboard bearing for said sheave secured to said bed, an internal gear on said sheave, a housing integral with said bed extending above the same, a worm, worm bearings and a sheave bearing in said housing, a pinion meshingv I 2. Elevator driving mechanism compris- I ing a traction sheave, a bed, an outboard bearing for said sheave secured to'said bed, an internal gear on said sheave, a housing integral with said bed extending above the same, a worm, worm bearings and a sheave bearing in said housing,said worm and sheave bearings being at substantially the same distance above said base, a pinion meshing with said internal gear, a worm wheel driving said pinion and driven by said worm, said worm wheel and pinion disposed beneath said worm, and worm driving means. 3. Elevator driving mechanism comprising a single traction sheave, a bed, an outboard bearing for said sheave secured to said bed, an internal gear on said sheave, a housing integral with said bed extending above the same, a worm having hearings on said housing, an inboard bearing for said sheave on said housing, said sheave bearings extending transversely of said bed and said worm bearings longitudinally of said bed, the axes of rotation of said worm and said sheave being at substantially' the same height, a pinion disposed beneath said worm and meshing with said internal gear, a worm wheel meshing with said worm and directly connected to said pinion, and a motor on said bed atthe opposite end thereof from saidhousing for driving said worm.

4. Elevator driving mechanism comprising a single traction sheave, a bed, an outboard bearing for said sheave secured to said bed, an internal gear. on said sheave, a

no i

housing integfal with saidjbed extending above the same, a Wor m having bearings on extending transversely of said bed and said Wei-n1 bearings longitudinally of saidb'ed the axes of rotation of said Worm and said sheave being at substantially the same height, a'pinion disposedbeneath said Worm and meshing with said internal gear, a Worm heel meshing With said Worm and directly L a connected to said-pinion, a motor on said a 'bed at the;,. opp0siteend thereof from said housingfor driving said Worm, said WOI'III disposed Within said housing, and said orm 1 "Wheel rotating Within said housing and Within said bed. 7 I

In testimony whereof I have hereunto afiixedmy "signature in the presence of the two subscribing Witnesses. 1

BENJAMIN F. MECHLING, JR. Witnesses; V I ALICE S. .MARsH,

'NELLIE FIELD.

I Copies of this patent may be obtained 'fior five: cents each, by addressing the commissioner of Patents.

Washington, D. 0. v a 

